Truong Duc Kien created NIFI-7450:
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Summary: Slow vote flow election due to coarse locking
Key: NIFI-7450
URL: https://issues.apache.org/jira/browse/NIFI-7450
Project: Apache NiFi
Issue Type: Improvement
Reporter: Truong Duc Kien
Synchronized locks in \{{ PopularVoteFlowElection::castVote }} and \{{
FingerprintFactory::createFingerprint }} create a congestion, since only 1 note
can calculate fingerprint and vote at a time during flow election process. For
large flow, creating fingerprint can take a long time, which means only a few
nodes can cast their vote before election time expires in large cluster.
[https://github.com/apache/nifi/blob/9608fe33fa4a3f39ee6ddca54184ccc85ef1a163/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-cluster/src/main/java/org/apache/nifi/cluster/coordination/flow/PopularVoteFlowElection.java#L119]
[https://github.com/apache/nifi/blob/9608fe33fa4a3f39ee6ddca54184ccc85ef1a163/nifi-nar-bundles/nifi-framework-bundle/nifi-framework/nifi-framework-core/src/main/java/org/apache/nifi/fingerprint/FingerprintFactory.java#L130]
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